Barney was raised by his single mother, Loretta Stinson, along with his older half-brother, James.As kids, James and Barney would often ask their mother why they were of different races (James is black), but she would lie or change the subject. In a bid to get him to stop asking, she would claim it was TV show host Bob Barker, leaving Barney distracted by this possibility for years.

Though most of his seduction plays are cold and mean-spirited, he is extremely caring toward friends and family, often using his wealth to help them out of tight spots.

He is a key player in helping Marshall and Ted find high-paying jobs at GNB, and helps Robin stay in the United States when her VISA is almost cancelled.

His ongoing relationship with Robin is an important aspect of Ted's life, as their eventual wedding is the event that brings he and his future wife together.

As of Last Forever, Barney and Robin divorced after three years marriage (2013 - 2016), being unable to maintain their relationship while Robin's career went global.

Barney asked Ted for his name and before leaving the bathroom he told Ted that he likes him.

Fifteen minutes later, Barney sat down next to Ted and told him that he's going to teach him how to live.

On 23 July 1981, Barney's biological father, Jerome Whittaker, took Barney to the National History Museum, under the guise "Uncle Jerry". The last words his uncle told him before he left were "Never stop partying".

Then six-year-old Barney knocked down the blue whale hung from the museum's ceiling by throwing a triceratops' rib at it. Throughout his childhood, Barney was constantly lied to by his mother to protect his feelings; for example Barney was told by his mother that he couldn't play basketball because he was too good, and it wasn't fair for the other kids, but in reality, his coach knew Barney wasn't good enough for the team. In seventh grade, Barney was bullied by Matthew Panning, who bragged about how he had sex with 100 girls.

Jack Package, The Commodore, Ted Mosby - Architect, Barry, Lorenzo Von Matterhorn, Barack Obama Jr., Neil Armstrong, Kristof Doppelganger, Mrs.

Stinsfire, Jack Fantastic, Arnie Linson, Barn, The Barn Door, The Barnacle, Barnito Supreme, Broda, Jennifer, Swarley, Swarles, Swarhili, Bob Swarley-man, Swar-lay, Swarles Barkley, Swarlos, Swarlitos, Swarshmallow, Keyser Soze, The President of the United States of America, B-Dawg, Stinson-Natti, Bro-hio, Diaper Man, Swarleze Theron, Barnabus Stinson, Jim Nacho, Barney Westside, Luigi, B-Nasty Barnabus "Barney" Stinson (born 1976), is one of the five main characters in How I Met Your Mother, portrayed by Neil Patrick Harris.

In September 2019, Barney finds out he will become a father, after a one night stand.